Very lucky that pos was postponed for another year
Mining is still profitable for people already in. I highly discourage anyone to join it now since in two months, maybe three, mining will completely stop because of Casper, meaning a transition from PoW to PoS.
What? What is it now? PoS soon or postponed?
PoS won't be until 2018 at the earliest. The fact that there is no concrete timeline should tell you a lot about how close to "finished" it is.